Apparatus for handling rolled strip steel



July 18, 1950 R. E. DE GARMO APPARATUS FOR HANDLING ROLLED STRIP STEEL 3 Sheets-Sheet 1 Filed Jan. 25, 1949 July 18, 1950 R. E. DE GARMO 2,515,397

APPARATUS FOR HANDLING ROLLED STRIP STEEL Filed Jan. 25, 1949 s Sheets-Sheet 2 I Z 49 48mg) 49 J0 J0 i5 r 9* J g 86 36 W M 5 5 J6 6 'F';"W I. 21

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July 18, 1950 R. E. DE GARMO 3,515,397

APPARATUS FOR HANDLING ROLLED STRIP STEEL Filed Jan. 25, 1949 3 Sheets-Sheet 3 IN VEN TOR. flick czrdi '56. 63/7/50,

.rllll Patented July 18, 1950 APPARATUSPFOR HANDLING ROLLED STRIP STEEL IvRichard .E.'De"Garn10, Upper Montclair, N. 3., as-

signor to National standard Company, Niles, Mich;aborporation er Michigan Al plicationJanuary 25, 1949, Serial No. 72,596

.Rolled steel striplis furnished by.rol1ing mills for various fabricating ,purposes in widthsgenerally: ranging .fronroneto six inches and rolled into coils usually-of the: order of-vthirty inches in diameter. Thesecoils may .vary in Weight from a-few hundred pounds toas much as a ton. It .willbe readilyseen, .therefore, thatwhen such coils of strip steel. are received at a' factory from a rolling mill that they cannotbelifted manually, and-present-a difiicult handling problemas, for example, ineffectingannealing of such coils .prior .tosubsequent .fabricationloperations.

- It .is the conventional practice in annealing such coils of strip. steel -to first lay .a .coil. onthe .floor witha. block .underone side thereof and then .pick the coil .up. w'ithan -overhead. crane. having an appropriate harness Qr-grab 'forengaging-and lifting the coil. The crane .is then-actuated .to raise the-coiland.position-thesameso that it may beloweredin' the'flatposition onto the base oftheannealingfurnace. The-above operations are repeated for each-co'il .vv-ith .the: several coils being stacked vertically, one above theother, in the .annealer .untilitislfully charged. The conventional annealernormally providesfor-the dis- .posal therein .of..-a vertical..stack of coils to a height of live .to sevenfeet. It will' be :readily appreciated that .this..method of loading an annealing furnacelisa tedious. as -.well.as cost1y operation considering the time. consumed-by .the cranebperator and .the repeated ,operations .of the crane required to'load. theannealer. 'I'he time consumingfactor involved .in charging .the annealer also reduces .the time the. annealer. may be operated, and it will bereadilyappreciated .that .the several factors abovejdiscussed. greatly add .to the cost of annealing material of '..the character indicated.

"It is an object of mypresentinvention to. provide' apparatus by which material oflthecharac- 'ter indicated, may beexpeditiously. handled. and in considerably less time lthan that previously required.

In accordance-With my; presentainvention, I propose to arrangelal plurality -.-of. coils in a row with their axes extending,substantially-in horizontal alignment and theritiltithe resulting cylinder sojthat the coilsarejdisposed in stacked relation with the axes thereof substantially .relatesto an .improvethen raised in one body and then lowered vertically onto the base of the annealing furnace. In this .manner,:the severalsteps of raising'and loweringeach individualcoil is avoided reducing .to a minimum the..-number of crane operations previously--required-in loading theannea-ling furnace. After the coils. have .been..annealed, the aforementioned steps .arecarried out in reverse relation, i..e., the vertical .stackof coils is raised .verticallycfi" wof the annealing base, the-stack .lowered, .andthe cylinder of;coils disposed inhorizontal position. In certainlknown formsofan- .nealing furnaces, thecylindrical tanksthereof are movable toward and av/ayfromthebase structure .bymeans of .acrane or-;otherwise, ,and in such annealing furnaces the cylindrical tanks thereof are appropriately moved in charging anduncharging the furnace. -The=-ab0ve method of handling of-thecoils is furtherreadilyfacilitated .20 in .that' the .coils as received from the mill. sit

on theiredges. on .the floor of the factoryl-so that ;a .plurality of -the coils =may be conveniently arranged in a horizontal row of appropriate .length toform, when'tilted vto a-verticalposi- 25 tion,.a.stack.-of the height-desiredfor-charging the annealing furnace.

The aforementioned .method may be conveniently. achieved .in accordance with my invention by providing a tilting apparatus having an arm member adapted tobedisposed inhorizontalposi- .tion. and when in that. position, to have arranged thereon a plurality.of.:coi1s-to..form the aforementioned horizontally extendingrow. The coils, since they normally arestored ,on the .factory floor .on"the'ir .,edg,es; mayi be Q conveniently raised by an. industrial truck ,.or gtractor having .a .sub- 'stantially horizontally projecting and ,.ver'tically movable", fork suitable for. picking .up'the coils. "The coils on the fork ofJthe tractor ,may' then .be deposited on thcarmof the tilting .apparatus .of .my'inven'tion by aappropriatermanipulation of. the tractor and" the liftfor-kT thereof. Alternatively, if desired, ,a horizontalrow comprisinglawplurality ,of coilsmay be-.raised .by. aQcrane: having a hairpin hook and positioned on the arm member-of the .tilting apparatus. After thegdesired number of coils arethus arrangedonthe arm member. of .the apparatus,.-the.arm memberis then-tilted so .as..to- .dispose'..-the rowuof .coi'ls v.i-n a vertically extending stack. 1. Preferably, a. lift. -p1ate.:is .supported on the arm member at its inner enchand ,the plate member. .is .provided With-rappropri-ate eyes with which the .hooks of a. cranerharncss are engageable. Upon raisingofethetcrane harness vertical alignment. The Verticalstackof.-coils.is 55 .bythe-crane,the.verticalsta ck-, of.coils.ismaised off the vertically disposed arm member of the tilting apparatus and the stack of coils may then be deposited on the base member of the annealing furnace. In the type of annealing furnace above referred to, the cylindrical tank of the furnace is moved to a position away from the base member during the loading operation, and is returned to its operative position on the base member after loading of the material to be treated on the base member. After annealing of the coils, they are removed by the crane in one body, positioned over the vertically extending arm of the tilting apparatus, and the arm of the latter then is moved to its horizontal position. The treated coils may then be removed from the arm of the tilting apparatus either by a lift fork truck or crane or otherwise, as desired.

The tilting apparatus of my invention comprises essentially an arm member adapted to be moved between substantially horizontal and vertical positions for supporting a plurality of substantially aligned coils for the purpose noted.

One important advantage of my present invention will readily be appreciated by comparison of the time involved in stacking a six foot stack of one inch band coils. Following the conventional method prior to my invention above referred to, approximately one and one-half hours is required to arrange the coils in the annealing furnace by the steps described. In the practice of the above method with the tilting apparatus referred to, a like stack may be disposed within the annealing furnace in about ten minutes or less. It will thus be seen that in addition to the substantial saving of time by the crane operator that the productive capacity of the annealer is greatly increased.

,It will be readily appreciated that although specific reference is made to coiled strip steel, that my invention may be readily practised with 'any type of material of substantially like shape,

unit for unit, regardless of such units basic shape.

Further objects and advantages of my present invention will appear from the detailed description.

Now, in order to acquaint those skilled in the art with the manner of constructing and utilizing apparatus in accordance with my invention, I shall describe in connection with the accompanying drawings certain preferred embodiments of the apparatus of my invention.

In the drawings:

Figure 1 is a side view of a tilting apparatus constructed in accordance with my present invention, with the arm member thereof disposed in vertical position and supporting a plurality of coils in a vertical stack with the axes of the several coils in substantially vertical alignment, and illustrating diagrammatically an annealing furnace adjacent the tilting apparatus charged with a load of coils, and an overhead crane for transferring a stack of coils of strip steel between the tilting apparatus and the annealing furnace;

Figure 2 is another side view of the tilting apparatus of Figure 1, but showing the arm member thereof disposed in horizontal position for loading or unloading coils of strip steel thereon with the coils of strip steel being shown in dotted lines;

Figure 3 is a view taken substantially along the line 3-3 of Figure 2 looking in the direction indicated by the arrows;

Figure 4 is a front elevational view of the main supporting frame of the tilting apparatus of Figures 1 through 3;

Figure 5 is a side elevational view of another form of tilting apparatus embodying my present invention, illustrating in full lines the horizontal position of the arm member and the coils of strip steel supported thereon, and in dotted lines the upright or vertical position of the arm member with the coils of strip steel being shown in dotted outline; and

Figure 6 is an end elevational view of the apparatus of Figure 4,

Referring now to Figures 1 through 4, I have shown one form of tilting apparatus embodying my present invention and which apparatus, it will be observed, comprises a main supporting frame indicated generally at 8 and a tilting frame means indicated generally at 9.

The main frame and-tilting frame, preferably, are made up of a plurality of suitable rigid heavy metal bars, I-beam members and the like to provide stability for the apparatus for the handling of heavy loads of the character noted. The main frame 8, as shown, comprises a pair of vertical side members Ill-40 connected together in spaced relation by a transversely extending base frame member H, best shown in Figure 4. A pair of, base channels l2-l2 project forwardly from the lower end portions of the side frame members I0, and reenforcing channels I3-l3 extend from the outer ends of the beams l2 angularly upwardly toward the upper end portions of the side frames Ill. The main frame further comprises a pair of base channel members I4I4 which extend rearwardly of the main frame and angularly toward each other and are secured at their outer ends to the lower end portion of a rear frame member or post I5. A pair of upper channel members Iii-J6 overlie one each of the lower base members l4 and are secured at their opposite ends adjacent the upper end portion of the rear frame or post 15, and to the upper end portions of the side frame members A pair of channel members l8--l8, as illustrated in Figures 1 and 2, extend angularly from adjacent the upper end portions of the side members In and downwardly toward the base channel members 8 and the lower end portion of the rear frame member or post l5 for reenforcing the main frame. Again referring to Figure 4, it will be observed that the main frame 8 further comprises a pair of channel members 2020 extending angularly downwardly and inwardly of the main frame fro the inner surfaces of the side frame members I0 and are secured at their lower ends to a base plate member 22, and which plate member 22 is also secured to the transversely extending base frame member II to extend forwardly of the main frame.

The above described several I-beams, channel members and bars are preferably suitably joined together in the relation noted, as by welding.

The construction described provides a rigid stationary frame serving as a base for the tilting frame means indicated generally at 9 and of a character permitting rotation of the tilting frame 9 in a manner to be described, with a heavy load of coils of strip steel without danger of the main frame collapsing or being shifted from its normally mounted fixed position.

The tilting frame means 9, as shown in the figures of the drawings referred to, comprises a trunnion means 24 (best shown in Figure 3) including a rigid body portion 25 of H cross-section extending transversely between the side frames i0-I0. The body portion 25 of the trunnion means 24 is provided with suitable journals at its opposite ends, which are supported bearings, indicated generally at 26--2-6, mounted at the upper ends of theside frames -40.

An elongated rigid arm member 28 formed of an iron channelis secured to the trunnion mem her intermediate the ends of the latter and extends at right angles "to the axis of rotation of the trunnion means 24 in the bearings 26. The

elongated arm member 28, as will later appear, provides for the support of a plurality of coils of steel strip thereon. An -I-beam member indicated generally at 29, is disposed below the elongated arm member 28 for the major portion of the length of the latter for reenforcing :the same against bending by theload-of the-coils of strip steel adapted to be supported thereon. The tilting frame 9 further comprises a boom 30, preferably an I-beam, secured at one end, substantially intermediatethe ends of the trunnion body 25 at right angles thereto and spaced substantially ninety degrees from the elongated arm 23. Reenforcing members 32-32 are secured at their opposite ends to opposite side surfaces of the boom and to the trunnion body 25 to provide for the rigid support of the boom. A counterweight supporting I-beam member 35 is suitably secured at one end to the trunnion body 25 diametrically opposite the boom -3B, and the frame member 35 carries a pair of counterweights 36 adjacent the outer end and at either side thereof. Suitable reenforcing bar members 37 extend from opposite sides of the frame 35 adjacent the counterweights36 to the trunnion block '25. The tilting frame 5, as best illustrated in Figure 2, further comprises reenforcing I- beam members 38 and 39 with the I-beam memher 38 extending from adjacent the outer end portion of the boom 30 diagonally downwardly and outwardly to the rearwardly extending portion of the elongated arm 28. The reenforcing member 39 is secured adjacent theouterend of the reenforcingI-beam 29 and the rearward end portion of the elongated arm 28 and *extends inwardly and is secured to the counterweight carrying frame member'i35 between the counterweights 3 5. 7

In the position'of the apparatus shown in-Figure 2, in which the elongated arm member 28 is disposed horizontally, the counterweight carrying frame member 35 is adapted to abut the transversely extending base bar II to support rigidly the elongated arm in the position noted. When the tilting frame 9 is rotated about its axis in the bearings 25 to dispose the elongated arm 22 in substantially vertical position, as shown in Figure 1, the boom member 30 rests upon the rear frame or end post [5 to provide for the rigid support of the tilting frame 9 in this position.

The tilting apparatus shown in Figures 1 through 3 further comprises suitable actuating means indicated generally at '40, and which actuating means comprises a known winch and motoy drive unit 3?. rigidly mounted inan overhead position as upon a structural supporting member 01' post 43. A cable 44 has connection with the rotatable drum of the winch 42 and the cable is trained about a sheave 45 mounted in a bearing block means 46 disposed closely adjacent the floor, at the lower end of the post 43. A run I! of the cable extends to a sheave 48 r'otatably mounted in a bearin "block 19 carried at the outer end of the boom 30 and too'nefside thereof. From the sheave'49, the run '50 of the cause);-

6 tendsto a pivot block 52 anchored swat-53 to the post '43. The-pivot block encloses a sheavc about which the cable is *tra-ined and the run. 54 of the-cable extends from the sheave of the pivot block 52 to a sheave, like the-sheave, mounted in the bearing block Ml at the other side and at the outer end of the boom 30. A fourth cable run 56 extends from the sheave last referred-to and is anchored at-51 adjacentthe lower end of thepost 43. g

The actuating means 40 in the form '--'of my invention, shown in Figures -1 through 3,;t'hus comprises a winch, sheave-and cable means adapted upon actuation of the winch in one 'direction of the winding thereof to wind the cable 43 upon the dr-um'an-d draw the several runs of the cable between the sheaves at the outer end of the boom and the sheave and'pivot block 53 connected to the post 43 to rotate the tilting frame "9 from-the position shown in Figure 2 to the position shown in Figure 1 Upon release of the winch or drive of the drum thereof in the opposite direction, the tilting frame 9 is adapted to be returned from the position shown in Figure l to the position shown in Figure 2. As shown, the .coil spring'fili extends between the post 15 of the main supporting frame and the outer ends of the frame member 35 of the tilting frame 9. The spring 60 is caused to be placed under tensionby :movement of the tilting frame 9 from the position shown inF-igure 2 to the :position shown in Fig+ urel.

Reference may now be had to Figures 4 and-'5 in which there is shown another form of apparatus embodying the principles of ,my present invention.

In the apparatus shown in figures-last referred to, the main supporting frame is indicated at 8 andthe tilting frame means at 9'.

'The main supporting frame 8, as shown, comprises a base 62 which supports a pair of spaced side frames 63- 63.

"The tilting frame 9 includes a trunnion mean-s indicated generally at 64, comprising a shaft r member :65 journalledat its opposite ends in bearings 66 mounted at the upper -'ends. o f the side frames 55- -63. An elongated armmember 67 of suitable form to facilitate'loading-and unloading as above described, is rigidly secured ,at its inner end to a hub member 61 whichin-turn is rigidlyfixed to the shaft 65 forrotation therewith. The shaft 65 also carries a worm gear segment 68 which is adapted to have meshing engagement with a worm 69 of a-n actuating means indicated generally at m. The worm 69 of the actuating means 10 iscarried on a shaft l2journalled in a supporting frame-13 fixed to the base 52 betweenth'esidewalls 53 of the main frame. A drive pulley or sheave M is fixed to the shaft 12 in any suitable manner and a belt drive member 15 is trained about the pulley -o=r sheave l4 and a sheave -:or pulley 16 adapted to be rotated by an electric motor". As will be understood, if desired, suitable gear reducing means may be provided for the actuating means 10 in effecting rotation --of the worm' 69. The Worm gear segment 68. in one direction of :rotation of the electric motor provides for-rotating the tilting frame 9 from the full line position shown in Figure 5, to the dotted line position; Upon reversing of the motor,'the tilting frame is adapted to be rotatedfrom its dotted line position to the full line position.

"The tilting apparatuses above described, have utilityfin -practicingthe above-referred to methpd of handling of coilsof strip steelin effecting-for example, the annealing thereof in a suitable annealing -furnace.- It will readily be understood that appropriate hydraulic actuating means could readily be provided in'lieu of the aforedescribed actuating means for rocking the tilting frames. Referring again to Figure 1', I have shown diagrammatically at 80 an annealing furnace, known in the art as a'bell type annealer, which comprises essentially a movable cylindrical tank insulated and lined with fire brick andprovided with suitable radiant or direct heating means,-supported in its operative position about a base structure 82. In a known type of furnace of the character indicated, the base'82 is flat and air circulating fans are disposed below the base. In the furnace illustrated, the cylindrical tank may be raised and lowered relative to the base by means of a crane. The annealing furnace, shown in Figure l, is disposed laterally and forwardly of the tilting apparatus shown in the figure and it will be seen that an overhead crane of known construction, indicated generally at 83, is arranged to travel along a track "84 from a position above the tilting apparatus shown in this figure laterally to a position'aligned directly over the annealing base 82.

In practice, the tilting frame 9 of the tilting apparatus is initially disposed to the position thereof shown in Figure 2 (or in the apparatus of Figures 5 and 6 to the position thereof shown in full lines in Figure 5) and in which position; a plurality of coils of strip steel are arranged in a row with their axes in substantially horizontal alignment on the elongated arm member 28. Loading of the coils of strip steel on the arm 28 'may be accomplished in any suitable manner.

In practice, coils of strip steel such as indicated at 86, are delivered to the factory and are seated on their edges in a position comparable to the position of 'such coils as shown in dotted lines in Figure 2. With the coils in this position, a lift truck or industrial truck of a type having a for-, wardly projecting arm member or fork carried by a carriage at the forward end of the truck and manipulatable by the operator to be raised and lowered vertically, is adapted to be positioned to load one or more of the coils of strip steel on the arm or fork of the truck as they stand on the factory floor to raise them off the floor and to align them with the horizontally projecting arm 28 of the tilting frame 9. With the coils'so aligned, the fork or arm member of the truck may be lowered so as to dispose the coils of strip steel on the arm member 28'in the position shown in Figure 2 after which the lift truck may be further lowered and the truck backed away. Before mounting of the coils of strip steel on the extending arm member of' the tilting frame, alifting plate shown at 88 is disposed adjacentthe inner end of the arm member 28 of the tilting'frame 9. With the lifting plate 88 disposed in position on the tilting frame 9 and with a plurality of coils 86 of strip steel disposed on the elongated arm 28, the actuating means, such as the winch, cable andsheave means 40 of the form of apparatus shown in Figures 2 and 3, (or the'electric motor 10 of the apparatus shown in Figures 4 and 5), is actuated to tilt the tilting frame 9 to dispose the coil carrying arm member 28 in vertical position. After the coils are disposed in a vertical stack, the harness 89 of the overhead crane 83 is positioned over the stack of coils, and the hooks 90 carried at the ends of cables 92' of the harness 89 are dispos'ed'in the 8 eyelets 93"of*the lifting plate. -The crane 83 is then'actuated to raise the vertical stack of coils 86 "vertically upwardly and'above the vertically extending arm'me'mber 28. The crane is then moved alongthe tracks 84 and 85 to a position in which the vertical stack of coils 86 is disposed above the annealing base 82. The crane 83 is then actuated to lower the stack of coils vertically downwardly to seat the stack of coils upon the base of the annealing furnace. The harness 89 may then be released from the lifting plate 88, the cylindrical tank of the furnace moved to the position shown in Figure 1, and the stack of coils then .annealed' In Figure 1, there is shown a' single stack of coils supported in the annealing base 82.- However, it will be understood that the annealing furnace may be of a design and capacity for supporting a plurality of stacks of coils'and in'such case, the aforementioned steps are-repeated with each stack until the furnace is fully charged. Upon completion of the annealing treatment, the tank is moved away from the base'and the vertical stack of coils is then removed by the crane 83. The crane is then returned along the tracks 85 and 84 to a position in which the vertical stack of coils is disposed above the vertically extending arm 28 of the tilting'frame 9. The vertical stack of coils'is then adapted to be lowered over the elongated arm' 28 and the actuating means 40 (or 10 of the form of apparatus of Figures 5 and 6) operated to eifect'movement of the tilting frame so that the elongated arm member 28 is returned to its initial horizontal position. The coils may then be removed by means of an industrial truck of the character already described, from the projecting arm of the tilting frame and delivered by the truck to the desired place in the factory.

It will beunderstood that the several coils of strip steel may be'loaded upon or unloaded from the horizontally extending elongated arms 28 or 61 of the'tilting frames 9 or 9' in other ways as, for example, by means of a crane provided with a hair-pin hook, preferably designed for picking up a plurality of coils of strip steel for disposal of'the coils 0n the extending arm of the tilting apparatus in the initial position described in effecting the annealing of such coils.

It is believed'thatfrom the detail description of the use of the tilting apparatus of Figures 1 through 4 in practicing the aforementioned method, that'the manner in which the apparatus of Figures 5 and-6 may so also be used, will bereadily understood in view of the above parenthetical'inclusion of references to the latter form of apparatus in the detail description of the method in connection with the first mentioned figures of the drawings.

The aforedescribed apparatus of my present invention results in effecting considerably more economicalhandlingand processing of material thanthat previously known, and while I have shown and described what I consider to be preferred embodiments of my invention, it will be understood that various modifications and rearrangements may be made therein without departing from the spirit and scope of my invention.

1 I claim: I

' 1. In an apparatus of the'character described, the combination of a main supporting frame having spaced apart vertical side members, tilting fname' means comprising, trunnion means extending transversely between said side members for supporting said tilting frame means for pivotal movement about a horizontal axis on said main frame means, and elongated arm means fixed to and extending at right angles to said trunnion means, stop means between said tilting frame means and said main frame for supporting said arm means in position to extend substantially horizontally and forwardly of said main frame, boom means fixed to said trunnion means to extend at right angles thereto and spaced substantially ninety degrees from said arm means and in the aforesaid position of said arm means extending substantially vertically upwardly and actuating means associated with said boom means for rotating said tilting frame means about its axis through an arc of substantially ninety degrees to provide for movement of said arm means from its said horizontal position to a substantially vertical upright position, and a frame member rearwarclly of said main frame for supporting said boom member in substantially horizontal position when said arm member is in its substantially vertical upright position.

2. In an apparatus of the character described, the combination of a main supporting frame having spaced apart vertical side members, tilting frame means comprising, trunnion means extending transversely between said side members for supporting said tilting frame means for pivotal movement about a horizontal axis on said main frame means, and elongated arm means fixed to and extending at right angles to said trunnion means, stop means between said tilting frame means and said main frame for supporting said arm means in position to extend substantially horizontally and forwardly of said main frame, boom means fixed to said trunnion means to extend at right angles thereto and spaced substantially ninety degrees from said arm means and in the aforesaid position of said arm means extending substantially vertically upwardly, actuating means associated with said boom means for rotating said tilting frame means about its said axis through an arc of substantially ninety degrees to provide for movement of said arm means from its said horizontal .position to a substantially vertical upright position, and a frame member rearwardly of said main frame for supporting said boom member in substantially horizontal position when said arm member is in its substantially vertical upright position, and counterweight means fixed to said tilting frame means substantially diametrically opposite said boom means.

3. The apparatus of claim 2 characterized by said actuating means comprising winch, and cable and sheave means between said winch and said tilting frame means for effecting rotation of said tilting frame means about its said axis.

4. In an apparatus of the character described, the combination of a main supporting frame having spaced apart vertical side members, tilting frame means comprising, trunnion means extending transversely between said side members for supporting said tilting frame means for pivotal movement about a horizontal axis on said main frame means, and elongated arm means fixed to and extending at right angles to said trunnion means, stop means between said tilting frame means and said main frame for supporting said arm means in position to extend substantially horizontally and forwardly of said main frame, boom means fixed to said trunnion means, actuating means associated with said boom means for rotating said tilting frame about its axis through an arc of substantially ninety degrees to provide for movement of said arm means from its said horizontal position to a substantially vertical upright position, and counterweight means fixed to said tilting frame means opposite said boom means.

5. In an apparatus of the character described,

the combination of a main supporting frame having spaced apart vertical side members, tilting frame means comprising, trunnion means extending transversely between said side members for supporting said tilting frame means for pivotal movement about a horizontal axis on said main frame means, and elongated arm means fixed to and extending at right angles to said trunnion means, stop means between said tilt-v ing frame means and said main frame for supporting said arm means in position to extend substantially horizontally and forwardly of said main frame, boom means fixed to said trunnion means, actuating means associated with said boom means for rotating said tilting frame about its axis through an arc of substantially ninety degrees to provide for movement of said arm means from its said horizontal position to a sub stantially vertical upright position, counterweight meansfixed to said tilting frame means opposite said boom means, and frame member for said main frame means for supporting said boom means in stationary position with said arm means in its vertical position.

RICHARD E. DE GARMO.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,135,890 Gedge, Jr Nov. 8, 1938 2,206,121 Pierce July 2, 1940 2,426,569 Stewart Aug. 26, 1947 

